/* 全局样式 */
:root {
    --primary-color: #8b5a2b;
    --secondary-color: #d4af37;
    --dark-color: #333;
    --light-color: #f4f4f4;
    --white-color: #fff;
    --gray-color: #ddd;
    --text-color: #555;
    --heading-font: 'Georgia', serif;
    --body-font: 'Arial', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--body-font);
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--white-color);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--heading-font);
    color: var(--dark-color);
    margin-bottom: 1rem;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

a:hover {
    color: var(--secondary-color);
}

p {
    margin-bottom: 1rem;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--white-color);
    padding: 10px 20px;
    border-radius: 5px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.btn:hover {
    background-color: var(--secondary-color);
    color: var(--dark-color);
}

.section-title {
    text-align: center;
    margin-bottom: 2rem;
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--secondary-color);
}

/* 头部样式 */
header {
    background-color: var(--white-color);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo h1 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 0;
}

.logo p {
    font-size: 0.8rem;
    color: var(--text-color);
    margin-bottom: 0;
}

nav ul {
    display: flex;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    color: var(--dark-color);
    font-weight: 500;
    padding: 5px 0;
    position: relative;
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary-color);
    transition: width 0.3s ease;
}

nav ul li a:hover::after,
nav ul li.active a::after {
    width: 100%;
}

.mobile-menu {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* 英雄区域 */
.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('../webimages/hero-bg.jpg') no-repeat center center/cover;
    height: 80vh;
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--white-color);
    margin-top: 70px;
}

.hero h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--white-color);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: var(--white-color);
}

/* 精选宝石区域 */
.featured {
    padding: 60px 0;
}

.featured-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.featured-item {
    background-color: var(--white-color);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.featured-item:hover {
    transform: translateY(-10px);
}

.featured-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.featured-item h3 {
    padding: 0 20px;
    margin-top: 15px;
}

.featured-item p {
    padding: 0 20px;
    margin-bottom: 20px;
}

.read-more {
    display: inline-block;
    padding: 0 20px 20px;
    color: var(--secondary-color);
    font-weight: bold;
}

/* 关于预览区域 */
.about-preview {
    padding: 60px 0;
    background-color: var(--light-color);
}

.about-preview .container {
    display: flex;
    align-items: center;
    gap: 50px;
}

.about-content {
    flex: 1;
}

.about-image {
    flex: 1;
}

.about-image img {
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* 文化预览区域 */
.culture-preview {
    padding: 80px 0;
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('../webimages/culture-bg.jpg') no-repeat center center/cover;
    color: var(--white-color);
    text-align: center;
}

.culture-preview h2,
.culture-preview p {
    color: var(--white-color);
}

.culture-content {
    max-width: 800px;
    margin: 0 auto;
}

/* 页眉区域 */
.page-header {
    padding: 100px 0 60px;
    text-align: center;
    background-color: var(--light-color);
    margin-top: 70px;
}

.page-header h2 {
    font-size: 2.5rem;
}

/* 关于页面内容 */
.about-content {
    padding: 60px 0;
}

.about-mission {
    margin-bottom: 60px;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 30px 0;
}

.team-member {
    text-align: center;
    background-color: var(--white-color);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.team-member img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 15px;
}

.team-member .title {
    color: var(--secondary-color);
    font-weight: bold;
    margin-bottom: 10px;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.value-item {
    text-align: center;
    padding: 20px;
}

.value-item i {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

/* 宝石分类页面 */
.categories-content {
    padding: 60px 0;
}

.category-filter {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
}

.filter-btn {
    padding: 8px 20px;
    background-color: var(--light-color);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn.active,
.filter-btn:hover {
    background-color: var(--primary-color);
    color: var(--white-color);
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.category-item {
    background-color: var(--white-color);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    padding: 20px;
}

.category-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 5px;
    margin-bottom: 15px;
}

.properties {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--gray-color);
}

.properties ul {
    margin-left: 20px;
}

.properties li {
    margin-bottom: 8px;
    list-style-type: disc;
}

/* 玉石文化页面 */
.culture-article {
    margin-bottom: 60px;
}

.article-image {
    width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 20px 0;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.famous-jades {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 30px 0;
}

.famous-jade {
    text-align: center;
}

.famous-jade img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 15px;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 30px auto;
}

.timeline::before {
    content: '';
    position: absolute;
    width: 2px;
    background-color: var(--secondary-color);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -1px;
}

.timeline-item {
    padding: 10px 40px;
    position: relative;
    width: 50%;
    box-sizing: border-box;
}

.timeline-item:nth-child(odd) {
    left: 0;
}

.timeline-item:nth-child(even) {
    left: 50%;
}

.timeline-date {
    padding: 8px 15px;
    background-color: var(--secondary-color);
    color: var(--white-color);
    border-radius: 5px;
    font-weight: bold;
    display: inline-block;
    margin-bottom: 10px;
}

.timeline-content {
    padding: 20px;
    background-color: var(--white-color);
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.timeline-content img {
    width: 100%;
    height: auto;
    margin-top: 15px;
    border-radius: 5px;
}

.modern-culture {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.modern-item {
    text-align: center;
    padding: 20px;
    background-color: var(--white-color);
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.modern-item i {
    font-size: 2rem;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

/* 联系我们页面 */
.contact-content .container {
    display: flex;
    gap: 50px;
    align-items: flex-start;
}

.contact-info {
    flex: 1;
}

.info-item {
    margin-bottom: 30px;
    display: flex;
    align-items: flex-start;
}

.info-item i {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-right: 15px;
    margin-top: 5px;
}

.social-icons a {
    display: inline-block;
    margin-right: 15px;
    font-size: 1.5rem;
    color: var(--primary-color);
}

.social-icons a:hover {
    color: var(--secondary-color);
}

.contact-form {
    flex: 1;
    background-color: var(--white-color);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--gray-color);
    border-radius: 5px;
    font-family: var(--body-font);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.map-section {
    padding: 60px 0;
    background-color: var(--light-color);
}

.map-container {
    height: 400px;
    margin-top: 30px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.map-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.faq-section {
    padding: 60px 0;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.faq-item {
    background-color: var(--white-color);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* 页脚样式 */
footer {
    background-color: var(--dark-color);
    color: var(--white-color);
    padding: 60px 0 0;
}

.footer-columns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-column h3 {
    color: var(--white-color);
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-column h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background-color: var(--secondary-color);
}

.footer-column p,
.footer-column a {
    color: var(--gray-color);
    margin-bottom: 10px;
    display: block;
}

.footer-column a:hover {
    color: var(--secondary-color);
}

.copyright {
    text-align: center;
    padding: 20px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--gray-color);
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .about-preview .container,
    .contact-content .container {
        flex-direction: column;
    }
    
    .about-image,
    .about-content,
    .contact-info,
    .contact-form {
        width: 100%;
    }
    
    .timeline::before {
        left: 30px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 20px;
    }
    
    .timeline-item:nth-child(even) {
        left: 0;
    }
    
    .timeline-date {
        position: absolute;
        left: 0;
        top: 0;
    }
}

@media (max-width: 768px) {
    nav ul {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--white-color);
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    }
    
    nav ul.show {
        display: flex;
    }
    
    nav ul li {
        margin: 10px 0;
    }
    
    .mobile-menu {
        display: block;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
}

@media (max-width: 576px) {
    .featured-grid,
    .team-grid,
    .values-grid {
        grid-template-columns: 1fr;
    }
    
    .hero {
        height: 60vh;
    }
    
    .page-header {
        padding: 80px 0 40px;
    }
}